Roof flashing



Oct. 9, 1928.

1,686,881 R. J. sTEPHENsoN ROOF FLASHING Filed March 17, 1927 UmmPatented Oct. 9, 1928.

UNITED STATES ROBERT J. STEPHENSON, OF CHICAGO, ILLINOIS.

ROOF FLASHING.

Application filed March 17, 1927.

This invention relates to roof lashings, adapted to maintain water-tightjoints between a roof and a pipe, for example, a Ventilating pipe,projecting upwardly therethrough.

Such devices commonly comprise a flat base plate which is anchored in orabout the roof materials, and a sleeve member projecting upwardly fromthe base, the free end of the sleeve snugly surrounding the pipe andbeing calked or otherwise secured thereto to maintain a tight joint. Thepipe is usually supported from below, independently of the roof, and ifthe roof should settle an appreciable amount, as it often does in time,or tilt slightly in one direction or another, the joint between thesleeve and the pipe will be broken away and leakage will occur.

One object of the present invention is to provide an improved roofflashing which will permit limited relative movements in variousdirections between the roof and pipe without disturbing the jointsbetween the flashing and the pipe or between the flashing and the roof.This is accomplished by providing two similar telescoping :flashingsleeves, one of which is secured to the pipe and the other to the roof,the two sleeves being capable of limited relative movements in variousdirections. Due to the long overlap between these two sleeves, no watercan flow between these sleeves, although they may be drawn apart at onepoint or another to permit the relative movements to take place,

Another object is to provide improved means for preventing completedisconnection of the main and counter-flashings without interfering withthe limited relative movements between these two members.

Another object is to provide an improved soft metal collar at the freeend of the Hashing, and means for bringing this collar into snugwater-tight engagement with the pipe.

Other objects and advantages of this invention will be apparent from thefollowing detailed description of certain approved forms of the device.

In the accompanying drawings: Fig. l is a perspective view of theimproved roof iiashing in use.

Fig. 2 is a central vertical section through the assembly as shown inFig. l.

Fig. 3 is a central vertical section taken serial No. 176,047.

at right angles to Fig. 2, and substantially on the line 3 3 of Fig. 2.

Fig. 4 is a horizontal section, on a somewhat larger scale, takensubstantially on the line 4f`4 of Fig. 2.

Fig. 5 is a detail view showing the soft metal collar in its originalform, before it is clamped against the pipe and moved to the positionshown in Fig. 3.

Fig. 6 is a vertical elevation, partially broken away, showing amodified form of means for preventing disconnection of the sleeves.

In Figs. l, 2, 3 and 6 is shown a portion of a roof l, having acovering, such as shingles 2, for excluding water. As indicated, aportion of the shingle covering 2 has been removed to disclose the baseplate 3 of the roof flashing, which base plate will ordinarily beanchored between the roof l and the shingles 2. Obviously, any othertype of roof covering might be used instead of the shingles. The base 3is preferably formed of a rectangular sheet of metal, for examplecopper, having a central opening from which projects the taperedflashing sleeve 4 which surrounds the pipe 5. The pipe 5 projectssubstantially vertically through an opening 6 in the roof l, and it isthe purpose of this roof flashing to prevent the entrance of water orsimilar substances through the opening 6 in the roof. The Hashing sleeve4 is preferably of a frusto-conical form, having a substantiallyelliptical cross-section, and projecting at an angle to theperpendicular from the base plate 3, so that the center line of theconical sleeve will substantially coincide with the vertical center lineof the pipe 5, while at the same time the base plate 3 will lie in aninclined plane corresponding to the inclination of the roof 1.Preferably this main flashing sleeve 4 is made of a separate piece ofsheet metal, the larger end of the Sleeve being secured about the edgesof a correspondingly shaped opening in the base plate 3, preferably bycrimping the edges of the two metal parts together and soldering same.The upper end of the sleeve 4 is large enough to extend loosely aboutthe pipe 5, as shown in the drawings.

A similarly shaped sleeve or counter-flashing 7 is adapted to fit snuglyover the main flashing sleeve 4, so that when the two sleeves arecompletely telescoped, the lower edge of sleeve 7 will extend closelyadjacent the base NIU t) Fl plate 3. The upper smaller end of the sleeve7 is preferably curved or flanged outwardly, as indicated at 8, and isanchored to or within the soft metal clamping collar The soft metalcollar- 9, preferably formed of lead, is in the form of a continuousring which tapers inwardly from a larger lower end 1t), in which thecrimped end of sleeve 7 is cast or otherwise embedded' to a smaller iupper end 11, having an internal diameter suliic-ient to loosely engageabout the pipe 5. r1`he coilar 9 if' reduced intermediately to form anannular groove 12 for receiving the wire. clamping ring 13'. Ring 13 issplit and has its ends looped, as indicated at 14, to receive the screwbolt 15. By tighteninga nut 16 on one end of,y this'bolt (or screwingthe bolt 15 into the nut 16), the ends 14 of the split ring 13 will bedrawn together so :is to decrease the diameter of this clamping ring.The original form of soft metal collar 9, before it is clamped to thepipe 5, is indicated in Fig. 5.

After the pipe 5, is slipped through the collar 9, and the parts arebrought to the desired relative positions, the, bolt 15 is tightened soas to contract the clamping ring 13 and deforin the soft metal collar 9so that its upper portion is drawn into snug engagement with the pipe,as indicated in Figs. 2, 3 and 4. The upper edge' of the collar 9 isthen calked against the pipe, and a final tightening of the bolt 15insures watertight joint. l

It is apparent that the outer sleeve 7may be lifted from its position ofeloseengage ment about the inner Asleeve 4, so as to permit longitudinalseparation of the pipe-engaging collar 9 and the base plate 3, and thismovement will create a clear space between the two sleeves which willpermitllateralmovement in direction with relation to sleeve 4, or willalso permit this outer sleeve to tilted in any direction to' a limitedextent with relation to the inner sleeve 4. Thus, within certain limits,all movements' of the pipe 5 with relation tothe roof 1, may beaccommodated without disturbing the engagement between the collar 9 andpipe. 5, or the base plate 3 and roof 1. Means is preferably provided topermit these relative movements between the two flashing sleeves,without permitting their complete separation. In the example shown inFigs. 2 and 3j a link 17 is pivoted at its upper end on a stud or rivet18niounted in the outer sleeve 7. The lower portion of link 17 isslotted, as shown at v19, to siidably engage a stud or rivet 20, lwhichis secured in the inner sleeve t, The stud 20 will slide in the slot 19to permit limited longitudinal separation of the two sleeves, and thelink 17 will flex, or will swing about its pivot 18 to accommodate thelrelative, lateral movements of the two sleeves. As indicated in Fig. 3,a pair of these slidable link connections are used at diametricallyopposite positions between the two sleeves. Obviously, the positioningof the link 1'? might be reversed end for end, or it might be securedtothe inner sleeve instead of to the outer sleeve. v

A different forni of connecting means for limiting the relativemovements of the sleeves is shown in Fig. 6. In this modification a pairof similar flexible links 21 are pivoted together at one end 22, andtheir other ends are pivot'ed at 23 to the sleeves 11 and 7,respectively.V The sleeves may be` separated until the intermediatepivotal connection 2,2 is brought lin .line with the twoV endconnections 23l If rivets are `used eX- tendingthrough the outer sleeve7, as shown at v18 or 23, the outer ends aref'preferably soldered overto prevent leakageA at thisl point. y 4

Vhen the device is positioned for service, the base plate 3 is anchoredto thel roof 1, and the collar9 is clamped and calked permanentlyl tothe pipe 5.` If now, thereof 1 should settle with respectto the pipe 5,carrying downx with itthe. base plate 3 of the flashing, this will notlbreak loose the joint between the collar 9 and the pipe 5, but thesleeves 4 and 7 will simply separate to .the extent necessary toupermitthis relative sep,-

arat'ioin ofthe base plateand the clampingyv collar. Anyrelativetiltling movements, or lateral movements, betweenthe roof 1 andpipe5 will be accommodated in' a similar4 manner. While each flashingisrdesignd for use on a roof of a given inclination tothe vertical, thisflashing is adaptedlfor use' on roo-fs which vary considerably freinthis standard inclination, sincelthe ajrfiglel of the pipe 5' within thedeformable soft mtal collar 9 may be varied to soine extent', and alsoby separating the sleeves yt and 7, they 'may be relatively tiltedtoaecommo Aate aconsiderable angular displacemento the baseI plate 3with relation to the center line of the pipe 5. `It will be evident thatthel long overlap provided between the main flashing and thecounter-flashing insures complete protection against the entrance ofliquids, evenvthough considerable settling oir displacement has takenplace between the roof andv pipe.

I claim: y

1. A roof flashing. comprising a base in the form of a ilat metal platehaving an 'ezttensible sleeve consisting of twfo overlapping sleevesections, ,extendir'ig from one face thereof, connecting means betweenthe sleeve sections for limiting their separation, acontinuous inwardlytapering soft metal collarat the free end of the sleeve, andcontractible means surrounding the soft metal collar and adapted todeform the collar and draw it into snug engagement with a pipe.

2. A4 roofiia'shing comprising a base in the form of a flat. metalplate'ha'ving an eXtenroo los

llo

sible sleeve consisting of two overlapping sleeve sections, extendingfrom one face thereof, a continuous soft metal collar at the free end ofthe sleeve, the collar having an annular groove formed in its outersurface, a split Wire ring mounted in the groove, the ring having spacedlooped ends, and a screwbolt connecting the loops and adapted tocontract the ring and deforrn the collar to draw it into snug engagementwith a pipe.

3. A roof hashing comprising a flat metal plate having a sleeveprojecting from one face thereof, a second similar sleeve into which thefirst sleeve telescopes, a soft metal collar at the outer end of thesecond sleeve for engaging about a pipe, and extensible link connectionsbetween the sleeves and secured thereto for limiting their separation.

4. A roof flashing comprising a flat metal plate having a sleeveprojecting from one face thereof, a second similar sleeve into which thefirst sleeve telescopes, a soft met-al collar at the outer end of thesecond sleeve for engaging about a pipe, a slotted link between thesleeves and secured to one sleeve, and a stud on the other sleeveengaging in the slot in the link to limit the separation of the sleeves.

ROBERT J. STEPHENSON.

